Niigata-grown Koshi Hikari cultivar rice is aged with tea leaves from Shizuoka in Seikoen's natural snow-cooled warehouse (called a "yukimuro"). The rice is the toasted and blended with the tea leaves and matcha for a rich, toasty flavor profile.
While the mechanism needs more research, something about this unique aging process (perhaps due to the temperature which hovers just below zero in a state in which water is neither freezing nor liquid) causes the tea to increase multiple chemical components that make up the tea leaf's umami flavor.
Specifically, an increase was measured from 632 mg/100g to 810.7 mg/100g of 15 amino acids according to their tests
- Ingredients: Green tea, toasted rice, matcha
- Net weight: 20g (yunomi package), 100 grams (original)
- Harvest: Spring
- Region: Leaves from Shizuoka. Rice from Niigata. Aged in Niigata, Japan.
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